This is a puzzle game where you compare two landscapes of Ongol Village drawn by the artist Saebyeok to find the differences. There are a total of 10 levels, and you must find 5 to 7 differences in each level.
The differences consist of places where objects have been removed or added, colors have changed, or images have been flipped left or right. Tapping on a different spot in either the top or bottom image marks it as found. You can zoom in on the screen to examine small details.
You can use 3 hints per level. Hints indicate unfinished locations with a blinking icon, and you must tap the marked spot to count it as found. Tapping on a non-different spot adds 3 seconds to your time. Each level has a target time, but the game does not end when the time runs out, so you can continue searching. Once all differences are found, your time taken and score are displayed, and you receive a time bonus if you find them faster than the target time. Completed levels and records are saved.
This is a spring puzzle where you compare two pictures of Ongol Village and find the differences.